2 ------------------------
3 - New FAQ. Please send updates and additions!
4 - Authors of controllers, please read the new section titled "Action
5 Reproduction" in DESIGN, which describes an Open vSwitch change in
6 behavior in corner cases that may affect some controllers.
8 - A new test utility that can create L3 tunnel between two Open
9 vSwitches and detect connectivity issues.
11 - New --sort and --rsort options for "dump-flows" command.
12 - "mod-port" command can now control all OpenFlow config flags.
14 - Allow general bitwise masking for IPv4 and IPv6 addresses in
15 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
17 - Allow support for arbitrary Ethernet masks. (Previously, only
18 the multicast bit in the destination address could be individually
20 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
21 - The OFPST_QUEUE request now reports an error if a specified port or
22 queue does not exist, or for requests for a specific queue on all
23 ports, if the specified queue does not exist on any port. (Previous
24 versions generally reported an empty set of results.)
25 - Additional protocols are not mirrored and dropped when forward-bpdu is
26 false. For a full list, see the ovs-vswitchd.conf.db man page.
27 - Open vSwitch now sends RARP packets in situations where it previously
28 sent a custom protocol, making it consistent with behavior of QEMU and
30 - All Open vSwitch programs and log files now show timestamps in UTC,
31 instead the local timezone, by default.
35 ------------------------
36 - kernel modules are renamed. openvswitch_mod.ko is now
37 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
38 - Increased the number of NXM registers to 8.
39 - Added ability to configure dscp setting for manager and controller
40 connections. By default, these connections have a DSCP value of
41 Internetwork Control (0xc0).
42 - Added the granular link health statistics, 'cfm_health', to an
45 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
46 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
49 - Added the "dump-ports-desc" command to retrieve port
50 information using the new port description multipart messages.
52 - Added support for spawning ovs-test server from the client.
53 - Now ovs-test is able to automatically create test bridges and ports.
54 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
55 - The "coverage/log" command previously available through ovs-appctl
56 has been replaced by "coverage/show". The new command replies with
57 coverage counter values, instead of logging them.
61 ------------------------
62 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
66 ------------------------
67 *** Internal only release ***
69 - LACP bonds no longer fall back to balance-slb when negotiations fail.
70 Instead they drop traffic.
71 - The default bond_mode changed from SLB to active-backup, to protect
72 unsuspecting users from the significant risks of SLB bonds (which are
73 documented in vswitchd/INTERNALS).
74 - Load balancing can be disabled by setting the bond-rebalance-interval
77 - Added support for bitwise matching on TCP and UDP ports.
78 See ovs-ofctl(8) for more information.
79 - NXM flow dumps now include times elapsed toward idle and hard
81 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
82 controllers more precise control over which OpenFlow messages they
83 receive asynchronously.
84 - New "fin_timeout" action.
85 - Added "fin_timeout" support to "learn" action.
86 - New Nicira action NXAST_CONTROLLER that offers additional features
87 over output to OFPP_CONTROLLER.
88 - When QoS settings for an interface do not configure a default queue
89 (queue 0), Open vSwitch now uses a default configuration for that
90 queue, instead of dropping all packets as in previous versions.
92 - Logging to console and file will have UTC timestamp as a default for
93 all the daemons. An example of the default format is
94 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
96 - The syntax of commands and options to set log levels was simplified,
97 to make it easier to remember.
98 - New support for limiting the number of flows in an OpenFlow flow
99 table, with configurable policy for evicting flows upon
100 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
101 for more information.
102 - New "enable-async-messages" column in the Controller table. If set to
103 false, OpenFlow connections to the controller will initially have all
104 asynchronous messages disabled, overriding normal OpenFlow behavior.
105 - ofproto-provider interface:
106 - "struct rule" has a new member "used" that ofproto implementations
107 should maintain by updating with ofproto_rule_update_used().
109 - The new option --timestamp causes the "monitor" command to print
110 a timestamp with every update.
111 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
115 ------------------------
117 - Added support for querying, modifying, and deleting flows
118 based on flow cookie when using NXM.
119 - Added new NXM_PACKET_IN format.
120 - Added new NXAST_DEC_TTL action.
122 - Added daemonization support to the monitor and snoop commands.
124 - The "find" command supports new set relational operators
125 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
126 - ovsdb-tool now uses the typical database and schema installation
127 directories as defaults.
128 - The default MAC learning timeout has been increased from 60 seconds
129 to 300 seconds. The MAC learning timeout is now configurable.
133 ------------------------
134 - Compatible with Open vSwitch kernel module included in Linux 3.3.
135 - New "VLAN splinters" feature to work around buggy device drivers
136 in old Linux versions. (This feature is deprecated. When
137 broken device drivers are no longer in widespread use, we will
138 delete this feature.) See ovs-vswitchd.conf.db(5) for more
141 - Added ability to match on IPv6 flow label through NXM.
142 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
143 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
144 - Added ability to modify ECN bits in IPv4.
145 - Added ability to modify TTL in IPv4.
147 - Don't require the "normal" action to use mirrors. Traffic will
148 now be properly mirrored for any flows, regardless of their
150 - Track packet and byte statistics sent on mirrors.
151 - The sFlow implementation can now usually infer the correct agent
152 device instead of having to be told explicitly.
154 - New "fdb/flush" command to flush bridge's MAC learning table.
156 - A new distributed testing tool that allows one to diagnose performance
157 and connectivity issues. This tool currently is not included in RH or
159 - RHEL packaging now supports integration with Red Hat network scripts.
161 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
162 to active-backup. SLB bonds carry significant risks with them
163 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
164 users from running into. Users are advised to update any scripts or
165 configuration which may be negatively impacted by explicitly setting
166 the bond mode which they want to use.
170 ------------------------
172 - Added an OpenFlow extension which allows the "output" action to accept
174 - Added an OpenFlow extension for flexible learning.
175 - Bumped number of NXM registers from four to five.
177 - New "version" command to determine version of running daemon.
178 - If no argument is provided for "cfm/show", displays detailed
179 information about all interfaces with CFM enabled.
180 - If no argument is provided for "lacp/show", displays detailed
181 information about all ports with LACP enabled.
183 - New "set-if" command to modify a datapath port's configuration.
185 - The software switch now supports 255 OpenFlow tables, instead
186 of just one. By default, only table 0 is consulted, but the
187 new NXAST_RESUBMIT_TABLE action can look up in additional
188 tables. Tables 128 and above are reserved for use by the
189 switch itself; please use only tables 0 through 127.
190 - Add support for 802.1D spanning tree (STP).
191 - Fragment handling extensions:
192 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
193 fields are made available for matching in fragments with
195 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
196 via "ip_frag" in ovs-ofctl).
197 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
198 fragment handling policy.
199 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
200 By default it remains compatible with the old version and other
201 standards-based implementations.
202 - Flow setups are now processed in a round-robin manner across ports
203 to prevent any single client from monopolizing the CPU and conducting
204 a denial of service attack.
205 - Added support for native VLAN tagging. A new "vlan_mode"
206 parameter can be set for "port". Possible values: "access",
207 "trunk", "native-tagged" and "native-untagged".
208 - test-openflowd has been removed. Please use ovs-vswitchd instead.
211 ------------------------
212 - New "ofproto" abstraction layer to ease porting to hardware
214 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
215 - Datapath support for Linux kernels up to 3.0.
217 - New "bundle" and "bundle_load" action extensions.
219 - Implement table unique constraints.
220 - Support cooperative locking between callers.
222 - New "-s" option for "show" command prints packet and byte
223 counters for each port.
225 - New "--readd" option for "replace-flows".
227 - New "show" command to print an overview of configuration.
228 - New "comment" command to add remark that explains intentions.
229 - ovs-brcompatd has been rewritten to fix long-standing bugs.
230 - ovs-openflowd has been renamed test-openflowd and moved into the
231 tests directory. Its presence confused too many users. Please
232 use ovs-vswitchd instead.
233 - New ovs-benchmark utility to test flow setup performance.
234 - A new log level "off" has been added. Configuring a log facility
235 "off" prevents any messages from being logged to it. Previously,
236 "emer" was effectively "off" because no messages were ever logged at
237 level "emer". Now, errors that cause a process to exit are logged
239 - "configure" option --with-l26 has been renamed --with-linux, and
240 --with-l26-source has been renamed --with-linux-source. The old
241 names will be removed after the next release, so please update
243 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
244 datapath/linux-2.6/compat-2.6 directories.
246 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
247 Please use the extensible match extensions instead.
248 - Removed the Maintenance_Point and Monitor tables in an effort
249 to simplify 802.1ag configuration.
250 - Performance and scalability improvements
254 ------------------------
255 - Ability to define policies over IPv6
258 - Support for extensible match extensions to OpenFlow
260 - Support for HFSC qdisc.
261 - Queue used by in-band control can now be configured.
263 - Kernel<->userspace interface has been reworked and should be
264 close to a stable ABI now.
265 - "Port group" concept has been dropped.
266 - GRE over IPSEC tunnels
268 - New active backup bonding mode.
269 - New L4 hashing support when LACP is enabled.
270 - Source MAC hash now includes VLAN field also.
272 - Greatly improved handling of large flow tables
274 - "show" command now prints full vport configuration.
275 - "dump-groups" command removed since kernel support for
276 port groups was dropped.
278 - New commands for working with the new Managers table.
279 - "list" command enhanced with new formatting options and --columns
281 - "get" command now accepts new --id option.
282 - New "find" command.
284 - New "queue-stats" command for printing queue stats.
285 - New commands "replace-flows" and "diff-flows".
286 - Commands to add and remove flows can now read from files.
287 - New --flow-format option to enable or disable NXM.
288 - New --more option to increase OpenFlow message verbosity.
289 - Removed "tun-cookie" command, which is no longer useful.
290 - ovs-controller enhancements for testing various features.
291 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
292 bugs. New ovs-vlan-bug-workaround command for enabling and
293 disabling a workaround for these driver bugs.
295 - "Resubmit" actions now update flow statistics.
296 - New "register" extension for use in matching and actions, via NXM.
297 - New "multipath" experimental action extension.
298 - New support for matching multicast Ethernet frames, via NXM.
299 - New extension for OpenFlow vendor error codes.
300 - New extension to set the QoS output queue without actually
301 sending to an output port.
302 - Open vSwitch now reports a single flow table, instead of
303 separate hash and wildcard tables. This better models the
304 current implementation.
305 - New experimental "note" action.
306 - New "ofproto/trace" ovs-appctl command and associated utilities
307 to ease debugging complex flow tables.
309 - Schema documentation now includes an entity-relationship diagram.
310 - The database is now garbage collected. In most tables,
311 unreferenced rows will be deleted automatically.
312 - Many tables now include statistics updated periodically by
313 ovs-vswitchd or ovsdb-server.
314 - Every table now has an "external-ids" column for use by OVS
316 - There is no default controller anymore. Each bridge must have its
317 controller individually specified.
318 - The "fail-mode" is now a property of a Bridge instead of a Controller.
319 - New versioning and checksum features.
320 - New Managers table and manager_options column in Open_vSwitch table
321 for specifying managers. The old "managers" column in the
322 Open_vSwitch table has been removed.
323 - Many "name" columns are now immutable.
325 - Dropped support for XenServer pre-5.6.100.
326 - Dropped support for Linux pre-2.6.18.
327 - Dropped controller discovery support.
328 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
329 Statistics reporting in the database is a rough equivalent.
330 - Dropped the "corekeeper" package (now separate, at
331 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
332 - Performance and scalability improvements
335 v1.1.0pre2 - 13 Sep 2010
336 ------------------------
339 v1.1.0pre1 - 31 Aug 2010
340 ------------------------
341 - OpenFlow 1.0 slicing (QoS) functionality
342 - Python bindings for configuration database (no write support)
343 - Performance and scalability improvements
348 - New "patch" interface type
353 - Configuration database with remote management
356 - Support for XenServer 5.5 and 5.6
357 - Performance and scalability improvements
360 v0.99.2 - 18 Feb 2010
361 ---------------------
364 v0.99.1 - 25 Jan 2010
365 ---------------------
366 - Add support for sFlow(R)
367 - Make headers compatible with C++
370 v0.99.0 - 14 Jan 2010
371 ---------------------
372 - User-space forwarding engine
375 v0.90.7 - 29 Nov 2009
376 ---------------------
377 - Add support for NetFlow active timeouts
384 v0.90.5 - 21 Sep 2009
385 ---------------------
386 - Generalize in-band control to more diverse network setups
projects / openvswitch / blob